DMAR_IRTA_REG     441 drivers/iommu/intel_irq_remapping.c 	irta = dmar_readq(iommu->reg + DMAR_IRTA_REG);
DMAR_IRTA_REG     484 drivers/iommu/intel_irq_remapping.c 	dmar_writeq(iommu->reg + DMAR_IRTA_REG,